Iron tip do not work continuously high temperature, high temperature work is easy to damage the tip! Ordinary solder melting point is 183, lead-free solder melting point is 227, usually the welding temperature is 300-380, 380 is the temperature of the dividing line, higher than 380, iron oxidation and loss is extremely fast, seriously affect the heating core life, The Higher than 380 temperature display be beating, the higher the temperature, the greater the beating! Recommended in the 300-380 for welding work, most of the work can be carried out, the temperature beating is normal, does not affect the use! The soldering iron used in this soldering station is a new soldering iron tip. Due to the unstable resistance of the new soldering iron tip, the temperature jump or ERROR, which is normal. After several times of use, the stability gradually stabilize. Type:T12 V2.3 Controller DIY Kits Colour: Material:Plastic Package Contents: 1 * T12 V2.3 Controller Board set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.